While a 9x9 pan is plenty for the 3 of us with some left over, many times I'll do a 9x13 pan (double all the ingredients - cook time is the same) so I have leftovers to make the burritos to put in the freezer. My youngest son loves them because he has such odd work hours and sometimes isn't here for meals.
Place rice and water in a saucepan and bring to a boil. Cover and turn to simmer for 20 minutes or until all water is absorbed.
Preheat oven to 350 deg F. Spray a 9x9 pan with cooking spray.
After grating cheese, toss the two together and then set aside.
When rice is done, pour into a large bowl. Sprinkle 2/3 of the cheese over the rice and stir in.
In separate bowl, whisk together the soup, Rotel, onion, salt and cumin. Add chicken to rice and pour the soup mix over top. Stir until combined well.
Pour rice mixture into the prepared 9x9 pan, sprinkle remaining cheese over top and cover with foil.
Bake for 40 minutes. Remove foil and bake for another 20 minutes. I usually dab off the floating grease (from the cheese) with a paper towel before putting in for that final 20 minutes. Serve.
BURRITOS: Leftovers are great made into burritos. Take 1/2 scant cup and spread down the middle of a 10" tortilla. Sprinkle in 1/8 cup of drained and rinsed black beans. I usually draw a small furrow down the rice so the beans don't roll all over while rolling. Roll, folding in sides for typical burrito shape.
NOTE: I freeze the burritos in a single layer on a parchment covered cookie sheet. When completely solid, I tuck them into a ziploc freezer bag. To reheat: Wrap in a piece of paper towel and cook for 4-5 minutes on 50% power (your microwave may differ).